Lock mechanism



H- F. KEIL LOCK MECHANISM Filed Sept. 10 1950 il -m M 12am)? M,M ATTORNEY Patented Nov. 22, 1932 UNITED STATES PATENT OFFICE.

HENRY F. KEIL, or SCARSDALE, NEW YoRK, ASSIGNOR To FRANCIS KEIL & s01\T,'I1\Tc.,

' A CORPORATION 013 NEW YORK LOCK MEOHAN ISM Application filed September 10, 1930. Serial No. 480,834.

This invention relates to lock construction.

One of the objects of this invention is to provide a practical and durable key-respon-.

sive lock-operating mechanism that will be capable of inexpensive and rapid manufacture, ease of assembly, and capable of being readily taken apart for repair, readjustment or change of certain of the related mechanism. Another object is to provide a lock construction of the tumbler-controlled cylinder type in -which the rotating cylinder core, the cylinder body, and the con-1 minimum and in which assembly or disas-.

sembly may be had without the use of complicated tools. Another object is to provide a construction of the above-mentioned char-' 'acter that will be capable of quantity production, all without sacrifice of precision and dependability of action. Another object is to provide a lock construction of the abovementioned character that will be well adapted to meet certain peculiar and varying conditions of hard practical use. Other objects will be in part obvious or in part pointed out hereinafter.

' The invention accordingly consists in the featuresof construction, combinations of elements, and arrangements of parts as will be exemplified in the structure to be hereinafter described and the scope of the application of which will be indicated in the following claims.

In the accompanying drawing in which is shown a preferred form of my invention,

Figure 1 is a vertical central sectional view through the assembled key cylinder mecha nism, certain parts being shown in elevation, showingthe cylinder bar, rotating cylinder and connecting bar in theirv assembled relation with respect to a door, or the like, the

bolt or latch mechanism operated by the con. necting bar being, however, not shown;

Figure 2 is a fragmentary side elevation of the cylinder core itself;

Figure 3 is an end view, as seen from the left of Figure 1, certain parts being broken away and certain parts being shown in section in order to bring out more clearly certain features of construction;

Figure 4 is a vertical sectional View, as seen along the line 44 of Figure 1;

Figure 5 is a sectional view, as seen along the line 55 of Figure 3, and C Figure 6 is a perspective view of one of the parts of the mechanism.

Similar reference characters refer to similar parts throughout the several views of the drawing.

Referring now more particularly to Figures 1 and 2, there is generally indicated at 10 a casing 01' cylinder housing preferably in the form of a solid casting shaped to provide a substantially cylindrical portion 11 which is bored out as at 12 to receive rotatably the cylinder core or cylinder 13. Extending upwardly from the cylindrical portion 11 and lengthwise thereof is a portion 14 formed integrally with the portion 11 and adapted, in any suitable manner, to house a suitable number of tumblers and coacting springs adapted to coact with a suitable and corresponding number of tumblers carried by the cylinder 13, the latter tumblers being adapted to be brought into proper coaction with the tumblers in the portion 14 by means of a suitably shaped key that fits into the key slot 15 extending lengthwise of the cylinder 13.

Extending across the right-hand ends of the portions 11 and 14 of the casting 10 and integrally formed therewith is a circular end plate portion 16 adapted to abut against the outer face of the door 17, or the like, into a suitable opening 18 of which the cylinder housing 10 is adapted to extend. Suitable ears or laterally extending flanges 19 are integrally formed with the casting 10 and are provided with suitable openings to receive suitable screws 20, the heads of which abutagainst a peripherally circular plate 21 bridged across the inside or left-hand face (as viewed in Figure 1) of the door and substantially covering the opening 18 therein. The screws 20 securely clamp the door 17 between the plate member 21 and the front end plate 16, thus securely holding the parts in assembled relation to the door 17 Any suitable bolt or latch mechanism may be mounted upon the left-hand face of the door 17, as viewed in Figure 1, and is operated by rotation of the cylinder 13 through a connecting bar 22 that extends through an opening 23 in the clamping plate 21 and extends into the casing of the latch or bolt mechanism for rotating a suitable operating member thereof, such as a crank, which in turn controls the actuation of the bolt or latch or like locking device. I

As is better shown in Figure 1, the bore 12 in the casing 10 which forms the cylindrical bearing surface with respect to which the the cylinder 13 may move in a direction toward the left, as seen in Figure 1 these parts are so proportioned that, when the flange 13 is seated within the counter-bore 24, the cylindrical openings in both the cylinder 13 and'the upper portion 14: of the casing 10, and in which openings the upper and lower tumblers are respectively received, are in proper alinement so that the upper tumblers may enter into the openings in the cylinder 13. To maintain this alinement throughout the subsequent use of the lock mechanism and also to maintain the connecting bar 22 in assembled relation with respect to the cylinder 13, I provide a cap-lil e member generally indicated at 25. This caplike member ceacts in a peculiar way, to achieve certain advantages, with the rotatable cylinder 13, the casing 10, and the connecting bar 22.

Considering now certain of the features of 1 construction and action of this member 25,v

it may first be pointed out that the left-hand end of the cylinder core 13 is transversely slotted, as at 26 (see also Figure 2), and it is into this transverse slot 26 that the trans versely extending lugs 27 of the connecting bar 22 extend, the latter being, by these lugs 2?, given substantially a T-shape.

The cap-like member is preferably made of sheetmetal and is better shown in perspective in Figure 6. It is generally of a cylindrical shape, the cylindrical side walls 25 having such an inside diameter that the end portion of the cylinder 13 is snugly received therein. As is shown in Figure 1, the cylinder 13 18 of a greater length than the casing '10, projecting out of the latter at the left thereof; the cap-like member 25 is made of an axial inside length substantially equivalent to the length of'tha t portion of the cylind'er 13 that projects out of the casing 10.

face of the end wall 25.

The member 25 is peripherally flanged as at 25', the flange 25 being adapted to abut against the left-hand face of the casing 10 (as is shown clearly in Figure 1) while the end wall 25 (Figure 6) of the member 25 has an opening 25 that is round and of a diameter at least as great as the maximum transverse dimension of the connecting bar 22, so that the latter, in assembling the mechanism, may first be passed into the opening. 25, leaving the transverse lugs 27 of the connecting bar 22 abutting against the inside With these two parts thus temporarily assembled, they are ready to be assembled with respect to the cylinder 13.

However, the cylinder 13 is provided with a peripherally extending groove 13, better shown in Figure 2, this groove being adjacent the left-h-and end of the cylinder, as the latter is viewed in Figure 1, and intersecting the right-hand end of the transverse slot 26. This preferred relation of the groove 13 and slot 26 is better shown in Figure 2. The cap member 25 at two diametrically opposed points, has two inwardly directed lugs or projections 25 and 25 of a width in the direction of the axis of the cap member 25 preferably less than the width of the peripheral groove 13 (Figure 2) in the cylinder 13. Where the cap member 25 is made of sheet metal, as in the preferred construction, these projections 25 and 25 may be formed by pressing or stamping suitable side portions of the sheet metal inwardly, as is clearly shown in Figure 6.

The end wall 25 (Figure 6) also has an inwardly directed projection 25; this projection or lug 25 is preferably formed, like the lugs 25 and 725 by pressing or stamping a suitable portion of the metal of the end wall 25" inwardly in an axial direction. Where the member is made of sheet meta-l, these operations are simple, rapid and inexpensive and may be carried out in any suitabl'e stamping or press operation. The lug or projection 25 occupies a position on :a radius that makes an angle of preferably with the diameter at the ends of which are the lugs or projections 25 and 255; in Figure 3 this preferred relation of these lugs is clearly shown.

After having assembled the cylinder core 13 with respect to the casting 1 0 by inserting the former into the latter in a direction toward the left, as viewed in Figure 1-, and after, of course, having assembled the tumblers with respect to these two parts, the connecting bar 22 with the cap-like member 25 thereover .is then assembled with respect to the -left-hand end ofthe cylinder core 13, the right-hand end portion of the connecting bar .22 with the cross-lugs 27 being inserted into the slot 26 (see Figures 2 and 4) in the cylinder .13. The member 25 is then rotated into such a a in position that the inwardly directed projections or lugs 25 and 25 are in alinement with the upper and lower ends '26 and 26 (see Figure 4) of the transverse slot 26, these ends of the slot 26 extending, as is clear from Figure 2, lengthwise of the cylinder core 13 to an extent preferably sufficient to include the entire peripheral groove 13 igure 2) in the core 13.

With the members 25 and 13 thus alined, the cap-like member 25 can he slid along in a direction toward the right, as viewed in Figure 1, the lugs 25 and 25 passing, during this movement, along the upper and lower ends 26 and 26 of the slot 26, it being pointed out that, as above noted, the outside diameters of the core 13 and the inside diameters of the cap member 25 are so proportioned that the core 13 is snugly received within the cap member 25.

This movement is continued until the projection 25 in the end wall 25 of the member 25 (see Figure 6) abuts against the left-hand end face of the core 13, assuming a position substantially like that shown in Figure 5. With the parts in this position, the lugs 25 and 25 still in the upper and lower ends of the transverse slot 26, are substantially alined with respect to the peripheral groove l3 (Figure 2) in the core 13. By means of a suitable tool, such as a pair of gripping pliers, the cap member 25 is thereupon rotated relative to the core 13, the lugs 25 and 25 passing into the peripheral groove 13 with which they preferably snugly interfit; this relative rotation is continued until the end projection 25 in the end wall 25 of the member 25 (Figure 6) assumes the position shown in Figure 3 in which it will be seen that the projection 25 has been brought into alinement with the end slot 26 in the core 13 and has snapped into it, thus locking the device 25 against unintended rotation of such an extentas will bring the projections or lugs 25 and 25 into alinement with the upper and lower ends of the slot 26 and insuring that the member 25 is held in a position wherein the lugs 25 and 25 abut against the left-hand wall portions of the peripheral groove 13 (Figure 2), thus preventing the member 25 from slipping ofi of the cylinder core 13.

Vith the parts in this position, the flange 25 of the member 25 (see Figures 6 and 1) is brought up and snu ly held against the left-hand end face of the casting 10, thus coacting with the flange 13 at the right-hand endof the cylinder 13 in holding the latter against displacement in an axial direction relative to the casting 10 and thus also holding the channels or holes in which the tumblers are seated in proper coacting alinement.

The member 25 is preferably made of sheet metal and may be readily'stamped to give it theform above described and preferably the inwardly directed lug or projection 25 in the end face 25 of the member 25 is yieldable in a direction axially of the member 25 and this yieldability may be achieved in any suitable manner. For example, the lug 25 is positioned sufficiently remote from the peripheral edge of the end face 25 to permit the end face yieldably to bulge out during the above-mentioned relative rotational movement between the member 25 and the core 18 and to permit the lug 25 to snap into the end slot 26. In the latter position, the holding lugs 25 and 25 are securely held in substantially the relation shown in Figure 3.

It will thus be seen that the construction may be readily assembled but it may here be pointed out that disassembly of the mecha nism may be just as easily achieved. Such disassembly is oftentimes necessary where the tumblers have to be interchanged or replaced so as to cause the lock mechanism to be operated by a different key; such change in the lock mechanism is frequently necessitated in practice, particularly in connection with loclrs on the doors to the rooms in hotels and the like. In such case, the parts occupying the relation better shown in Figure 3, the caplike member 25 is rotated in either clockwise or counter-clockwise direction, as viewed in Figure 3, by means of a suitable tool, such as a. pair of gripping pliers, the cylinder 13 being, of course, held against rotation during this action. The rotation is continued through an angle of substantially 90 in the course of which movement the locking lug 25 is moved out of the end slot 26 and the locking lugs 25 and 25 are again brought into the upper and lower ends 26 and 26 (see Figure 4) of the slot 26, whence the cap member 25 may be slid off of the core 13 by movement in a direction toward the left, as seen in Figure 1. The cylinder 13 may then be removed, the tumblers changed around or replaced, whence the parts may be quickly and readily assembled, as will now be clear in view of theforegoing.

It will thus be seen that there has been provided in this invention a construction in which the various objects hereinbefore set forth, together with many thoroughly practical advantages are successfully achieved. lit will be seen that the mechanism is of simple and inexpensive construction, of thoroughly dependable action in use, and permits of rapid assembly and disassembly of the mechanism to meet the varying conditions of practical use.

As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that all matter hereinbefore set forth, or shown in the accompanying drawing, is to be interpreted as illustrative and not in a limiting sense. i

I claim:

7 1. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally en tending groove adjacent its rear end, a sheet metal cap-like member adapted to be received over the rear end of said cylinder and having an opening in its rear end through which said connecting bar passes, said opening being shaped with respect to said connecting bar to permit relative rotation therebetween, and a pair of opposed inwardly directed projections in the side wall of said cap-like memher, said projections being adapted to be received in the opposite ends of said slot and, upon rotation of said cap-like member relative to said cylinder, to be moved into said peripheral groove, and an inwardly directed projection in the end wall of said cap-like member adapted to be seated in said slot atte a certain rotational movement has tal -zen place between said cap-like member and said cylinder, thereby to prevent further relative rotation therebetween.

2. In loclr construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a sheet metal cap-like member adapted to be received over the rear end of said cylinder and having an opening in its rear end through which said connecting bar passes, said opening being shaped with respect to said connecting bar to permit relative rotation therebetween, and a pair of opposed inwardly directed projections in the side wall of said cap-like member, said projections being adapted to be received in the opposite ends of said slot and, upon rotation of said cap-like member relative to said cylinder, to be moved into said peripheral groove.

3. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a sheet metal cap-like member adapted to be received over the rear end of said cylinder and having an opening in its rear end through which said connecting bar passes, said opening being shaped with respect to said connecting bar to permit relative rotation there between, and a pair of opposed inwardiy di.

rected projections in the side wall of said cap-like member, said projections being adapted to be received in the opposite ends of said slot and, upon rotation of said caplike member relative to said cylinder, to be moved into said peripheral groove, and means for locking said cap-like member against relative rotation between itself and said cylinder.

4. In lock construction, in combination, a key-receiving, cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a sheet metal cap-like member adapted to be received over the rear end of said cylinder and having an opening in its rear end through which said connecting bar passes, said opening being shaped with respect to said connecting bar to permit relative rotation therebetween, an inwardly directed lug on the side wall of said cap-lil e member and adaptedto be passed along the end of said slot as said cap member is slid over and along the rear end of said cylinder and adapted upon subsequent rotation of said cap member with respect to said cylinder to move into said peripheral groove.

5. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for re ceiving said bar and having a peripherally extending groove adjacent its rear end, a sheet metal cap-like member adapted to be received over the rear end of said cylinder and having an opening in its rear end through which said connecting bar passes, said opening being shaped with respect to said connecting bar to permit relative rotation there between, an inwardly directed lug on the side wall of said cap-like member and adapted to be passed along the end of said slot as said cap member is slid over and along the rear end of said cylinder and adapted upon subsequent rotation of said cap member with respect to said cylinder to move into said peripheral groove, and means adapted to coact with said slot for holding said cap-like member against rotation with respect to said cylinder.

6. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a sheet metal cap-like member adapted to be received over the rear end of said cylinder and having an opening in its rear end through which said connecting bar passes, said opening being shaped with respect to said connecting bar to permit relative rotation therebetween, an inwardly directed lug on the side wall of said cap-like member and adapted to be passed along the end of said slot as said cap member is slid over and along the rear end of said cylinder and adapted upon subsequent rotation of said cap member with respect to said cylinder to move into said peripheral groove, and means for holding said cap member against unintended rotation relative to said cylinder after said lug has been moved into said. groove.

7. In lock costruction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a pair of substantially diametrically opposed inwar ly direct-ed depressions in the side wall of said-cap lilre member and adapted to be moved along the ends of said opposed slot as said cap member is moved over the end of said cylinder, said depressions being shaped to move into said peripheral groove upon subsequent rotation of said cap-like membe relative to said cylinder.

8. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a pair of substantially diametrically opposed inwardly directed depressions in the side wall of said cap-like member and adapted to be moved along the end of said cylinder, said depressions being shaped to move into said peripheral groove upon subsequent rotation of said cap-like member relative to said cylinder, and means for holding said capdike member against such rotation as will bring said depressions into alinement with the opposite ends ofsaid slot.

9. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a peripherally extending groove adjacent its rear end, a pair of substantially diametrically opposed in-- wardly directed depressions in the side wall of said cap-like member and adapted to be moved along the ends of said opposed slot as said cap member is moved over the end of said cylinder, said depressions being shaped to move into said peripheral groove upon subsequent rotation of said cap-like member relative to said cylinder, an d an inwardly directed depression in the end wall of said cap member and positioned so that, upon the completion of such rotation of said member as will bring said first-mentioned depressions into said groove, said end Wall depression enters said slot.

10. Inlock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess in its cylindrical surface and connected with said slot, and a cap-like member adapted to fit over the end of said cylinder and having an inwardly directed lug in its side Wall, the end Wall of said cap-like member being apertured to permit said connecting bar to pass therethrough, said lug being adapted to pass along the open end of said slot and upon 'a subsequent relative rotation between said cap-like member and said cylinder to be moved into said recess.

11. In l-oclr construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess in its cylindrical surface and connected with said slot, a cap-like member adapted to fit over the end of said cylinder and having an inwardly directed lug in its side wall, the end wall of said cap-like member being apertured to permit said connecting bar to pass there through, said lug being adapted to pass along the open. end of said slot and upon a subse quent relative rotation between said cap-like member and said cylinder to be moved into said recess, and means preventing said lug from moving out of said recess.

12. In lock construction, in combination, a lrey-receivin cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess in its cylindrical surface and connected with said slot, and means for holding said cylinder, said casing and said connecting bar in assembled relation, said means having a member adapted to be moved in the direction of the axis of said cylinder and along an end of said slot and into said recess.

13 In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for re ceiving said bar and having a recess in its cylindrical surface and connected with said slot, means for holding said cylinder, said casing and said connecting bar in assembled relation, said means having a member, adapted to be moved along an end of said slot and into said recess, and means for preventing said member from moving out of said recess.

14. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess 111 ts cylindrical surface and connected with sa1d slot, and means movable first through said slot and then into said recess for detachably holding said cylinder, said casing and said connecting bar in assembled relation.

15. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess in its cy lindrical surface and connected with said slot, and a single member related to said cylinder, said casing and said connecting bar for holding them in assembled relation, said member and said cylinder having coacting portions adapted upon relative rotational movement therebetween to interlock.

16. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess in its cylindrical surface and connected with said slot, and a single member related to said cylinder, said casing and said connecting bar for holding them in assembled relation, said member and said cylinder having coacting portions adapted upon relative movement therebetween to interlock, and additional coacting parts adapted upon the completion of said relative movement to prevent such relative movement as will bring said parts out of interlocking relation.

17. In lock construction, in combination, a key-receiving cylinder, a casing rotatably mounting said cylinder, a connecting bar for actuation by said cylinder, said cylinder having a transverse slot at its rear end for receiving said bar and having a recess in its cylindrical surface and connected With said slot, and a single member related to said cylinder, said casing and said connecting bar for holding them in assembled relation, said member and said cylinder having coacting portions adapted upon relative movement therebetween in first one direction and then at an angle to said first direction to interlock, and means for preventing such relative movement as will bring said parts out of interlocking relation.

18. In lock construction, in combination, a key-receiving cylinder member, a casing member rotatably mounting said cylinder member and having a plane-faced end beyond which said cylinder member projects, a connecting bar member for actuation by said cylinder member, and a device carried by the projecting portion of said cylinder member and having portions for engagement with said plane-faced end of said casing member and with said connecting bar member for holding said members together, said device and said cylinder member having coacting parts adapted upon relative movement thereetween to interlock 19. In lock construction, in combination, a

key-receiving cylinder member, a casing member rotatably mounting said cylinder member, and a device for holding said two members assembled, one of said members having a recess which has a first portion extending in a direction substantially parallel to the axis of said cylinder member and a second portion extending substantially at right angles to said first portion and said de vice having a projection adapted to pass along said first portion of said recess upon a first movement of said device in a direction substantially parallel to the axis of said cylinder member and then to pass along said second portion of said recess upon a second movement of said device to carry said projection thereinto.

20. In lock construction, in combination, a key-receiving cylinder member, a casing member rotatably mounting said cylinder member, and a device for holding said two members assembled, one of said members having a recess which has a first portion ex tending in a direction substantially parallel to the axis of said cylinder member and a second portion extending substantially at right angles to said first portion and said device having a projection adapted to pass along said first portion of said recess upon a first movement of said device in a direction substantially parallel to the axis of said cylinder member and then to pass along said second portion of said recess upon a second movement of said device to carry said projection thereinto, said device and said recessed member being also provided with means adapted upon a certain extent of said second movement of said device to interengage and lock said device against reverse movement.

In testimony whereof, I have signed my name to this specification this 5th day of September, 1930.

HENRY F. KEIL. 

